Extracted mqtt publish into sperate function

client/bin/Cargo.toml

@@ -22,7 +22,8 @@ serde_derive = "1.0"
 serde_json = "1.0"
 # end of web stuff
 ping = "0.4.1"
-paho-mqtt = "0.12.3"
+paho-mqtt = "0.13.2"
+async-trait = "0.1"
 # Ini File parser
 rust-ini = "0.21"
 lazy_static = "1.4"

client/bin/src/main.rs

@@ -1,6 +1,7 @@
 use std::{time::Duration, fmt::format};
 use std::sync::{RwLock, Mutex, Arc};
-use paho_mqtt;
+use async_trait::async_trait;
+use paho_mqtt::{AsyncClient,Message as MqttMessage};
 use str;
 use bit::BitIndex;
 use chrono_tz::Europe::Berlin;
@@ -454,6 +455,35 @@ lazy_static! {
         mqttPrefix : "test/ledboard".to_string() };
 }
 
+
+
+/// Asynchronously publishes a message to the specified topic.
+/// 
+/// @author Gwen2.5
+/// 
+/// # Arguments
+/// * `mac` - Paho async client
+/// * `topic` - The MQTT topic to which the message will be published.
+/// * `message` - The message to be published.
+/// 
+/// # Returns
+/// True if the message was successfully published, false otherwise.
+async fn publish_message(ref mac: AsyncClient, topic: &str, message: &str) -> bool {
+    let msg = MqttMessage::new(topic, message, 0);
+
+    // Publish the message and ensure it completes without error
+    let token = match mac.publish(msg).await {
+        Ok(_token) => {
+            return true;
+        },
+        Err(err) => {
+            eprintln!("Failed to publish message: {:?}", err);
+            return false;
+        }
+    };
+    
+}
+
 fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
 
     // Read configuration file
@@ -576,18 +606,14 @@ fn main_function(parameter1: String, parameter2: Option<String>) -> ExitCode {
     }
     else if GlobalConfiguration.mqttPrefix.len() > 0
     {
-        let topicInStation = format!("{}{}", GlobalConfiguration.mqttPrefix, "/inbound/station");
-        let payload = straba_res.outbound_station.as_bytes(); //Get the payload as a &[u8]
-        
-        let mc = mqtt_client.as_ref().unwrap();
-
-        let message = paho_mqtt::Message::new ( topicInStation.as_str(),
-            payload,
-            0
-        );
-
-        mc.publish(message);
+        let topicInStation: String = format!("{}{}", GlobalConfiguration.mqttPrefix, "/inbound/station");
+        let stationName: String = format!("{}", straba_res.inbound_station);
+        if (mqtt_client.is_some()) {
+            publish_message(mqtt_client.unwrap(), topicInStation.as_str(), stationName.as_str());
             println!("MQTT published {:?} = {:?}s", topicInStation, straba_res.outbound_station);
+        } else {
+            println!("MQTT not ready... {:?} = {:?}s", topicInStation, straba_res.outbound_station);
+        }
     }